It is true that an adequate digestion is essential for absorption, and as a matter of fact, the whole digestive machinery has evolved with the only intention of making the foodstuff suitable for absorption. But if we look to the phenomenon from the opposite standpoint, it will be seen that absorption also is no less important for digestive process. The [...]
In this article we will discuss about the structure of an excretory organ in human body, with the help of a suitable diagram. Excretion is defined as the removal of toxic materials and waste products of metabolism from organisms. The metabolic reactions within the body are always creating waste products. There are two main sets of excretory organs for removing [...]
In this article we will discuss about the structure of the eye, with the help of suitable diagrams. The eye is one of the most important of the receptors. It provides us with information on dimensions, colours and the distance of objects in our environment. How the Eye Produces a Focused Image: 1. Light rays from an object enter the [...]